Pra Rancangan Pabrik Pembuatan Sodium Silikat dari Natrium Hidroksida dan Abu Sekam Padi dengan Kapasitas 18.800 Ton/Tahun dan Tugas Khusus: Rancangan Keteknikan Detail Reaktor Tangki Berpengaduk

Abstract

Making sodium silicate from sodium hydroxide and rice husk ash at operating conditions is temperature at 90°C and pressure at 1 atm in a continuous stirred tank reactor. In making sodium silicate, rice husk ash is used because it has a high silica content. With a high content of silica compounds, rice husk ash can be used as raw material for making sodium silicate. The need for sodium silicate in Indonesia is quite high, and even the fulfillment of sodium silicate consumption in Indonesia is carried out by imports from various countries. This sodium silicate factory is planned to have a production capacity of 18.800 tonnes/year. The planned form of business entity is a Limited Liability Company (LLC). The planned form of organization is line and staff with the required workforce of 150 people. The factory location is planned in Jatiluhur District, Purwakarta Regency, West Java, Indonesia. The land area required is 12.870 m2. The results of the economic aspect analysis obtained are as follows: • Capital Investment (CI) = IDR 273,667,866,486.05 • Total Cost (TC) = IDR 176,509,893,067.10 • Profit Margin (PM) = 21.559% • Break Even Point (BEP) = 51.988% • BEP Capacity Point = 9.773,660 tons • Return On Investment (ROI) = 12.499% • Pay Out Time (POT) = 8 years • Return On Network (RON) = 24.998% • Internal Rate of Return (IRR) = 14.584% Based on the results of the analysis of economic aspects, it can be concluded that the preliminary plant design of sodium silicate from sodium hydroxide and rice husk ash with capacity of 18.800 tonnes/year is feasible to be established